2006 GMC Sierra vs. 1999 Opel Omega
To start off, 2006 GMC Sierra is newer by 7 year(s). Which means there will be less support and parts availability for 1999 Opel Omega. In addition, the cost of maintenance, including insurance, on 1999 Opel Omega would be higher. At 5,358 cc (8 cylinders), 2006 GMC Sierra is equipped with a bigger engine. In terms of performance, 2006 GMC Sierra (295 HP @ 5200 RPM) has 153 more horse power than 1999 Opel Omega. (142 HP @ 5400 RPM). In normal driving conditions, 2006 GMC Sierra should accelerate faster than 1999 Opel Omega.
Let's talk about torque, 2006 GMC Sierra (454 Nm @ 4000 RPM) has 245 more torque (in Nm) than 1999 Opel Omega. (209 Nm @ 4000 RPM). This means 2006 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1999 Opel Omega.
Compare all specifications:
| 2006 GMC Sierra | 1999 Opel Omega | |
| Make | GMC | Opel |
| Model | Sierra | Omega |
| Year Released | 2006 | 1999 |
| Engine Position | Front | Front |
| Engine Size | 5358 cc | 2196 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 295 HP | 142 HP |
| Engine RPM | 5200 RPM | 5400 RPM |
| Torque | 454 Nm | 209 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Engine Bore Size | 96 mm | 86 mm |
| Engine Stroke Size | 92 mm | 94.6 mm |
| Engine Compression Ratio | 9.5:1 | 10.5:1 |
| Fuel Type | Gasoline / Electric Hybrid | Gasoline |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 5850 mm | 4900 mm |
| Vehicle Width | 2000 mm | 1780 mm |
| Vehicle Height | 1810 mm | 1460 mm |
| Wheelbase Size | 3650 mm | 2850 mm |
| Fuel Consumption Overall | 12.4 L/100km | 7.8 L/100km |
| Fuel Tank Capacity | 98 L | 75 L |
